Form separator



R. MINKOW FORM SEPARATOR Feb. 1, 1938.

Fired Aug. 26, 1937 lllllm.

Patented Feb. 1, 1938 UNTED STATES PATENT OFFICE FORM SEPARATOR Application August 26, 1937, Serial No. 161,133

4 Claims.

This invention relates to box machinery and more particularly to an arrangement for separating the component parts of a form-block for the purpose of facilitating the removal from the 5 adjacent faces of the said parts, of adhesive, paper, cardboard, or any other materials that may get between' the faces during the operation of the machine.

One object of this invention is to provide a new and improved construction of the class described. A further object is to provide an arrangement of the type contemplated with fewer parts. Another object is to provide a means which can serve to separate the component parts of the form-block. Other objects are: to provide such means which is suitable for use in connection with diiierent types of boxes; to provide a device which may be applied to an adjustable machine but which device will continue to operate independently of the adjustments which are made in the machine. Other objects of this invention will appear in the following description when taken in connection with the accompanying drawing.

2, In the drawing wherein corresponding parts in the various figures are indicated by the same numerals, Fig. 1 is a front elevation of the form block part of the machine incorporating features of this invention. Fig. 2 is a similar View with ..0 the device operated to separate the elements of the form-block. Fig. 3 is a partial side elevation of the device as viewed from the right hand side of Fig. 2.

Considering the drawing in greater detail, the invention contemplates means to be applied to machines of the type described in the Patent Number 1,131,792 to Reifsnyder et al. of 1915. The entire structure of the machine has not been shown for the simple reason that persons skilled in the art are thoroughly acquainted with such machinery.

The frame of a machine as illustrated in the Reifsnyder patent supra as indicated at lll includes a bracket portion which is bifurcated having the arms l2 and I4 supporting at their outer ends a bearing structure having upper bearing blocks i6 and i8 and lower bearing blocks 2|] and 22 and an interconnecting housing for a slide 24. All of the relatively movable parts of the apparatus are supported from this frame structure.

Arranged to move up and down and housed in said bearing structure is a slide 24 which carries guide blocks 26 and 28 at its upper and lower ends respectively. The lower member 30 of the form-block is secured upon the guide block 28 by means of the shaft 32, which is fastened at 34 to the form-block, and which extends through the upper form-block 36, being iinally secured by appropriate fastening means at the point 38. 'I'he slide 24 and the lower form-block 30 may 5 reciprocate vertically.

To accomplish this vertical reciprocating motion the lever arm 40 is pivoted upon the frame at a point not shown and is arranged to be operated by a cam, the cam follower being fas- 10 tened on the arm 40 at a point somewhere between the pivot, which is not shown, and that portion of the lever arm which is shown. The cam causes the arm 40 to move about the pivot point and to impart vertical reciprocating motion 15 to the slide 24 by means hereinafter described.

The upper form-block 36 is carried at the lower end of the slide rods 42 and 44, the opposite ends of the rods being interconnected by means of the cross head 46 to which the rods are fastened 20 by the fastening means 48 and 59. These rods are supported in the frame structure in appropriate slide bearings and are also arranged to pass through oppositely disposed bearings in the guide blocks 26 and 28. 25

The upper and lower form blocks as heretofore described are arranged to have a limited relative movement with respect to each other and are also arranged to have controlled relative movement with respect to the supporting structure of the frame. To further control the movement of the form-blocks a heavy spring 52 is provided connected at one end 54 to the slide 24 and at the opposite end 56 to the crosshead 46. Whenever the blocks are moved apart relatively with 35 respect to each other this spring is extended and maintains a yieldable force tending to pull the blocks together.

The slide 24 and the lever arm 40 are interconnected by means of a link 58 which latter is 40 pivotally connected tothe slide 24 by the bolt 60. The lower end of the link has an elongated slot 62 which is secured to the arm 40 by a pivotal connection. A circular bearing member 64 is arranged to ride within the slot 66 and is secured 45 to the arm 46 by a downwardly extending threaded portion as is well known in the art. To provide for adjustment of the machine for diiferent sizes of boxes, the bearing member 64 is threadedly secured to the link as at 68. The threaded 50 member is secured in the link by collars 10 and is arranged for easy adjustment by means of the knurled head end 12. The pivot point 64 is, in this manner, adjustable relative to the opposite ends of the slot. Another lever 14 is mounted 55 on the framework of the machine and is operated by the cam to provide a vertical motion. This latter member isV fastened by the link 16 to a yoke ".78 carried at the lower end of the rods 88 and 82. These latter rods are arranged to slide in the bearing portions I6, I8, 2D and l2 and are interconnected by a yoke 84 at their upper ends. A limit stop carried on the back of the crosshead 45 is arranged to engage an abutment carried on the lever arm 14 so that in the downward stroke of the form-block a point is reached at which the upper form-block 36 stops fits downward movement as a result of the coaction between the arm and the lever. After certain coordinated operations have taken place to glue the parts of a box together, the lever 14 continues its downward movement so that the upper plunger or pusher block 36 mayk approach'the block 3i) performing the final sealing operation which is taking place. At the completion Vof thisV gluing operation the upper and lower form blocks are moved away from the box.

It will be appreciated that in such operations glue may get on the adjacent faces 85 and 88 of the elements of the form-block and stick the two parts of the block together.f This prevents the parts of the block from properly separating thereby causing improper action of the machinery and damage to the boxes being formed.

In order to provideV the machine with means to separate these relatively movable elements of the block means are mounted on the crosshead 35 and the slide 24. The lever 9@ is pivctally mounted at the point 50 on theV slide 24 and is arranged to engage a slot 92 in the link 94 which latter is pivotally mounted at 96 on the crosshead A8. A spring S8 is fastened at lil to the lever 96 and at the point IGZ to the'link 94. gThe connection between the lever and link is so arranged that the pivot lil-'i can slide freely in the slot in the normal operation of the machine.V parts of the form-block are operating normally the relative movement between them is taken care of automatically by the slotr92r. When the two component portions of the block are stuck together a clock-wise movement ofthe lever 99 jams the pivot |04 against the upper end lll of the slot 92 and through the lever 94 forces the slide 24 and the crosshead 45 awayfrom Yeach other. This movement breaks the seal between the surfaces 8S and 88 and allows the two parts to be separated so that the glue or other material can be cleaned away from the abutting surfaces. After the cleaning operation has been completed the lever and link will be moved from their actu.- ated positions seen in Fig. 2, to the normal in- When the two active position shown in Fig. 1 by merely releasing the lever from the grip of the hand.

This device can be installed in a very few minutes without necessitating any extensive drilling of holes, whereas the devices of the prior art require many new holes and at least a half a day to install. j l

Further detail operation of the other parts of the machine will be found in the previously mentioned patent and is not repeated herein.

Although Ya preferred embodiment of this invention has been shown and described, variations within the true spirit and scope of the same are to be determined by the appended claims.

What I claim is:

l. A box machine comprising a reciprocating form-block having relatively separable elements, a crosshead movable with one of said elements, mechanism operativeV during the cycle of said niacin'ne to separate said elements, a lever pivotally connected to the other of said elements, and a link pivoted on said crosshead and to said lever operable to separate said elements and a spring between said link and lever.

2. A box machine comprising a reciprocating form-block relatively separable elements, a crosshead movable with one of said elements, mechanism operative during the cycle of said machine to separate said elements; a lever pivoted centrahy at the front of the machine vertically below the crosshead movable lwith the other of said elements, a link pivoted on said crosshead and having an elongated slot, and means pivotally connecting said link and said lever.

3. A box machine comprising a reciprocating form-block having relatively separable elements;

a crosshead movable with one of said elements' mechanism operative during the cycle of said machine to separate saidV elements, a pivoted lever movable with the other of said elements, a link pivotedron' the front of said crosshead and having an' elongated slot, and lost motion means pivotally connecting said link and said lever.

ll. A box machine comprising a reciprocating form-block having relatively separable elements, a crosshead movable with one of said elements; mechanism operative during the cycle of said machine to separate said Velementsya link pivoted centrally on the front of said crosshead, a lever pivoted vertically below the attachment of said link and crosshead and having a slot in one end pivotally connected to said link and means normally holding said link and lever in inactive position.

ROBERT MTNKOW. 

